#403C9C#403C9C

#403C9C is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.9% C 0.151 H 279.5°. Best body text is #FFFFFF at 8.96:1 contrast (WCAG AA passes).

Color values

HEX	#403C9C
RGB	rgb(64, 60, 156)
HSL	hsl(243, 44%, 42%)
HSV	hsv(243, 62%, 61%)
CMYK	cmyk(59%, 61.5%, 0%, 38.8%)
CIE-LAB	lab(31.16, 30.60, -51.97)
CIE-LCH	lch(31.16, 60.31, 300.49°)
OKLab	oklab(41.91% 0.0249 -0.1493)
OKLCH	oklch(41.91% 0.151 279.5)
XYZ	xyz(9.7291, 6.7213, 32.2307)
Luminance	0.0672 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.79

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403C9C #989C3C

analogous

#3C689C #403C9C #703C9C

triadic

#403C9C #9C403C #3C9C40

tetradic

#403C9C #9C3C68 #989C3C #3C9C70

square

#403C9C #9C3C68 #989C3C #3C9C70

split-complementary

#403C9C #9C703C #689C3C

monochromatic

#1C1A44 #2E2B70 #403C9C #5B57BE #8683CF

Accessibility & contrast

On white

8.96

#403C9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#403C9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403C9C

8.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403C9C	#FFFFFF	#000000	##FFFFFF
##403C9C	1.00	8.96	2.34	8.96
#FFFFFF	8.96	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9F

Deuteranopia (green-blind)

#00469A

Tritanopia (blue-blind)

#055366

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #403c9c;
/* rgb */ color: rgb(64, 60, 156);
/* oklch */ color: oklch(41.9% 0.151 279.5);

Tailwind

colors: {
  custom: {
    50: '#7e72ba',
    500: '#403c9c',
    950: '#000000',
  },
}

SCSS

$custom: #403c9c;
$custom-light: #7e72ba;
$custom-dark: #000000;

JSON

{
  "hex": "#403c9c",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 156
  },
  "hsl": {
    "h": 242.5,
    "s": 44.444,
    "l": 42.353
  },
  "oklch": {
    "l": 0.41913,
    "c": 0.15139,
    "h": 279.5
  },
  "luminance": 0.06722
}

Semantic roles & 50–950 ramp

primary

#403C9C

secondary

#B7B97A

accent

#D454CF

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403C9C

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →